I'm wondering how much his injury affected him, because his whole defensive style has changed. Or has Poch changed it for the team's benefit, that actually doesn't benefit the team.
The two goals I mentioned against Burnley, the first, Foyth lost his man, but Toby was the spare man. He simply never got off the ground. If you look at the photos on the internet you'll see you could barely get a cigarette paper under him. The second, he gave their player 5 yards of space inside our penalty area and was turned trying to force him down the outside. He miss hit the shot and went straight to their player who scored.
Both goals pointed to a certain limitation in movement that has crept into his game. In all honesty, how often did he win an important defensive header in our penalty area all last season. Less than the other CHs I'd hazard a guess.